Patents by Inventor James V. Tarver

James V. Tarver has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Auto isolation circuit for malfunctioning current loop
    Patent number: 4939730
    Abstract: In a data communication system including a plurality of remote units under the control of a master controller, whereby each of the remote units operates to transmit and receive data from the master controller, an interface circuit for connecting each remote unit to the controller includes a switching transistor operable via a timing network for turning on to apply a high level signal continuously on the remote data output terminal of the associated interface circuit, for effectively isolating the malfunctioning remote transceiver, while permitting normal system operation without interference from the malfunctioning unit.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: July 3, 1990
    Assignee: Gilbarco Inc.
    Inventor: James V. Tarver